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Thread: M12 1.5 Thread chaser

  1. #1
    One of those purists you keep hearing about. sdg3205's Avatar
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    M12 1.5 Thread chaser

    Anyone have a good recommendation for an M12 x 1.5 thread chaser? I'm having a lot of trouble finding one locally, and I've called all the local fastener and tool stores. Lots of taps, but no chasers.

    I need to clean out my head bolt block threads.
    Dave

    Here, somewhere.


  2. #2
    President, DeLorean Industries
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    You need a tap not a chaser. Threads need to be cut further into block. Other wise head bolts will bind and provide false torque readings.

  3. #3
    Senior Member Bitsyncmaster's Avatar
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    I just grind most of the taper end off a tap and use that to chase the threads. That lets me also tap the holes better at the bottom if it's not a through hole.
    Dave M vin 03572
    http://dm-eng.weebly.com/

  4. #4
    LS1 DMC Nicholas R's Avatar
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    Quote Originally Posted by Bitsyncmaster View Post
    I just grind most of the taper end off a tap and use that to chase the threads. That lets me also tap the holes better at the bottom if it's not a through hole.
    Or you could just buy a bottoming tap.

  5. #5
    Senior Member Bitsyncmaster's Avatar
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    Quote Originally Posted by Nicholas R View Post
    Or you could just buy a bottoming tap.
    Have not seen them locally. I actually don't buy the store brand taps except for chasing. The big name taps work so much better when tapping new threads.
    Dave M vin 03572
    http://dm-eng.weebly.com/

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